Stock-distribution for blast-furnaces.



K. L. LANDGREBE. STOCK DISTRIBUTION FOR BLAST FURNACES.

APPLICATION FILED SEPT. 22, 190B.

"Patented Apr. 13, 1909.

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UNITED STATES PATNT OFFICE.

KARL LOUIS LANDGREBE, OF BETHLEHEM, PENNSYLVANIA.

STOCK-DISTRIBUTION FOR BLAST-FURNACES.

To all whom it may concern:

Be it known that I, KARL Lonrs LAND- GREBE, a citizen of the United States, and a resident of Bethlehem, in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements .in S'toclcDistribution for Blast- Furnaces, of which the following is a specification.

The principal objects of the present invention are, first, to accomplish the thorough distribution of stock on the large bell of a blast furnace so that the stock will in turn be equally distributed around the inside of the furnace stack second, to impart to the incoming charges of stock a swirling movement whereby, for example, the fine and coarse parts thereof are evenly distributed and third, to divert the charges of stock in under the deflector onto all parts of the top bell.

The invention will be claimed at the end hereof, but will first be described in connection with the embodiment of it chosen for illustration in the accompanying drawings in which Figure 1, is a side elevational view partly in section of so much of the upper parts of a blast furnace as are necessary to illustrate the invention in a plication thereto. Fig. 2, is an end view il ustrating a detail of construction. Fig. 3, is a transverse sectional view illustrating a detail of construction, and Fig. 4, is an enlarged View illustrating details of the apparatus.

In the drawings 1, is the upper portion of the stack of a blast furnace fitted with a comparatively large lower hell 2, and a comparatively small upper bell 3.

4, is a cylindrical barrel, the lower end of which is opened and closed by the upper bell 3, and the upper end of which is provided with a flaring hopper 5, of generally oblong form at its top. The stock is dumped into the hopper 5, and barrel '1, from skip cars or other suitable devices, for example, at the points marked a and b, on one of the long sides of the hopper. By proper manipulation of the bells 2 and 3, the stock passes through the chamber 6, and enters the blast furnace. The bell 2, is carried by a rod or link 7, connected with one end of a pivoted beam 8, which is operated by any kind of a cylinder and lowers and raises the bell by the up or down stroke. The bell 3, is carried by a sleeve 9, which is connected to one end of a Specification of Letters Patent.

Application filed September 22, 1908.

Patented April 13, 1909.

SerialNo. 454,168.

i twoart pivoted beam 10, by means, for examp e, of the rods 11, having a suitable turnbuckle. The beam 10, is lowered and raised at proper intervals.

So far as has been described the construction is not unusual and is selected for the sake of a description of the invention, the parts embodying which and their connection with the parts already referred to, will now be described.

The sleeve 9, is not only raised and lowered as has been described, but is revoluble and it has connected with it so as to turn it, but be movable endwise with it, a bevel wheel 12, which meshes with another bevel wheel 13, connected with a shaft 1 1, to which rotary motion is imparted by way of beveled gears 15, and a paWl-and-ratchet connection 16. T he pawl arm of this connection is connected by means of a link 17 with the beam 10, so that when the beam 10 turns to lower the bell 3, the ratchet and beveled gear connections turn the sleeve 9. The annular extent of the turning of the sleeve 9 may be increased or diminished by adjusting the length of the link 17 and therefore the throw of the pawl. Connected with the sleeve 9 is a segmental inclined deflector 18. This deflector turns with the sleeve 9 and its inclination is such that it discharges onto the curved wall of the barrel i. FUI'tl'lGl'IIlOl'G its arrangement with respect to the top of the hell 3 is such that space is afforded as at 0, above the top surface of the up or bell and below the undersurface of the de ector, sufficient to receive the contents of a skip car or other feed of stock; thus the stock gets in under the deflector and uniformly all around the top surface of the upper bell.

Merely to describe the invention, but without attempting to explain the many ways in which it can be employed to meet the requirements of the introduction of stock, it may be said that if a feed of stock, as a skipful, is dumped at c, it falls upon the deflector 18 from which it is discharged against the curved wall of the barrel from which it rebounds and is uniformly deposited all around the top of the bell 3, even underneath the defiector 18. The described discharge onto the wall of the barrel 4 mixes upthe coarse and fine particles of the feed ofstock by giving them a sort of swirling movement and the distribution of the feed of stock evenly all around the top of the bell 3 insures an even distribution of stock on the lower bell and also in the blast furnace. The upper bell 3, is then lowered and on the up stroke as the bell closes the deflector is turned as has been described and to the extent required. If a charge of stock should be introduced at b, it may still get in under the deflector l8, and be uniformly distributed all around the top surface of the bell 3, and this is true no matter What the position of the deflector may be in respect to the point where the charge of stock is delivered. The movements of the deflector may be so timed that when the feed of stock does not reach it, that articular feed of stock may not consist of he and coarse particles and therefore will not require to have the swirling motion imparted to it. These operations may be repeated, and stock introduced at a and b, is uniformly mixed and uniformly distributed in the stack, which as is well known is a desirable result.

What I claim is:

1. In a blast furnace a fixed barrel having at its base a bell and open at its top for the reception of stock, and a revoluble segmental deflector arranged in the barrel and inclined to discharge against its curved wall and disposed above the bell With space between for the passage and reception of rebounding or diverted stock.

2. In combination an upper bell, a fixed barrel extending upward therefrom and provided with a hopper at two points of one of the sides of which the charge is received, and a revoluble segmental deflector arranged above the hell with space beneath and illclined to discharge onto the curved wall of the barrel wherefrom charges of stock rebound and are delivered in under the bell, and whereby charges of stock are also delivered clear of the deflector so that each charge is rleceived uniformly around the top of the bel 3. A blast furnace having two bells and provided with a deflector arranged above the top surface of the upper bell to provide space between that surface and the under side of the deflector for the passage of stock whereby a feed of stock is distributed to all parts of the surface of the top bell and therefore to the lower bell from which it is delivered to the furnace, substantially as described.

4. In a blast furnace the combination of a fixed barrel, an upper bell, a beam and connections for raising and lowering the upper bell, a ratchet and ratchet Wheel and connections for turning the upper bell, an ad justable link interposed between the beam and bell for varying the degree of turning of the upper bell, and a deflector connected to rotate with the upper bell but disposed above the same to afford space between the upper surface of the bell and the under side of the deflector into which stock is diverted or rebounds, substantially as described.

In testimony whereof I have hereunto signed my name in the resence of witnesses.

KARL LOU S LANDGREBE. /Vitnesses GEORGE WrNsroNE, P. G. HARTZELL. 

